Friction-clutch pulley.



PATBNTED Dnc; a1. .1907.

*L. H. GBISLBNDORFP, PnIcTIoN CLUTCH PULLBY.

APPLIOATIOI FILED DBG. 26. 1906.

2 SHEETS-SHEET 2.

LEE H.

GEISENDORFF, OF lNDlNi-XPOLIS, INDIANA.

americana-*uren runner.

Specification of :Letters atenti Patented Bee. 31., 1.907.

lpplication tiled December 2S, 1906. Serial No. 3 l9.fl(ll3` To all whom it may concern.'

Be it known that l, Lian H. Gnrsns'nonrr, a citizen of the United States, residing at indianapolis, in the county of Marion and State of Indiana, have invented certain new and useful Improvements in Friction-Clutch 'Puh leys, of which the following is a specification.

This invention relates to improvements in friction-clutch pulleys, and the object of the .invention is to provide a friction-clutch wherein a fixed friction or grip wheel and the clutch mechanism operating therewith, will be assembled within an outer belt pulley so that the stresses on the friction wheel will maintain the entire structure in true position on its shaft.

The object also is to provide continuous instead of split friction plates, in order to better maintain the accurate adjustment of the device, and to provide removable pulley arms to facilitate access-to its interior parts, and to construct a clutch-pulley which will be simple, durable, and effective in its operation.

l accomplish the objects of my invention by the mechanism illustratedr in the accompanying drawings, in which- Figure 1 is a View in side elevation of the related parts. of my pulley with the pulley itself shown in section on the line 1 1 of Fig. 2; Fig. 2 is a vertical section taken on the line 2-2 of Fig. 1, and Fig. 3 is a vertical section on the line 33 of Fig. 1, the several views being shown looking in the direction of the arrows.

Like characters of reference indicate like parts throughout the several views of the drawings.

4 is the bel'tor main driving pulley, whichs has the double arms v5 and 6, and hubs 7 and 8, which latter are bored to receive the bushings 9 and. 10, preferably of brass. The hubs fit their respective bushings with a tiglit fit, but the bushings turn freely upon the main shaft lever. To obviate the necessity for splitting or constructing the pulley et in halves, l form the arms 5 separately of the pulley 4 so as to permit el' the lateral removal of said arms and t heir integral hub The arms 6 and hub n are integral parts ol' each other and of the pulley 4, and extend ing inwardly from the junction of these arms pairs, 2Sv and with their rim, transversely of the latter, are the ribs or flanges 12, the abrupt ends of which, opposite arms 6, foim shoulders against which the arms 5 are bolted.

1l are the bolts for securing the arms 5 to the pulley. They pass through suitable holes near the ends of the arms 6, and to save labor and expense in construction, the flanges 12 are each provided with a longitudinal channel 15, of ample dimensions to allow the bolt to pass through it without contact or interference with the .bottom or sides of the channel.

lnclosed between the karms 5 and 6, of the pulley el, and situated concentrically with the shaft 11, is the fixe-:l friction or grip wheel 16, having the hub 1T securely fastened by keys or set screws or both to the sha-ft 11. The ends of this hub are faced accurately to form bearings against the hubs 7 and 8, and. the sides of the friction rim 16 of this friction wheel are turned true to form friction or gripping surfaces. T he belt pulley el is held against longitudinal movement of the shaft 11 by the hub 17 of the friction wheel 16.

The clamping rings Ztlv and 21 are situated on opposite sides of the friction-rim of the wheel 16.. They are notched at their edges to receive the flanges 12, whereby the rings are made to move in unison with the pulley l. Bolted to the sides of the rings adjacent to the rim 16, are the friction plates 22, preferably of wood, which need not extend all of the way around, but may consist of segments located at. diametrically opposite portions of the friction-rim 16 between radial ribs 24 integrally formed on the said frictionrim 16 (their positions being shown by the dotted lines, in Fig. 3,), which help to h old the plates in place on their respective rings. At the middles of these friction plates 22, at two diametrically opposite places of the outer face of the ringl 21, are the two 29, of parallel plates. -The two plates of each pair have grooyes 30, on their adjacent sides, parallel with the shaft 11, to receive the flattened ends of the fulcrum pins 31 and 3i?. These pins 31 and 32 pass through the eyes of respective eye-bolts and IH. Both of these eye-bolts pass through holes in the rings- 2() and 21, and have the nuts 336 on their threaded ends, t0

limit the longitudinal movement 0f the bolts, and 37 are jam nuts to hold the given positions of the nuts 36.

39 are levers having bifurcated ends to receive the eyes of the respective eyeebolts 33 and 34. rl`hese bifurcated ends are provided .With the cams 38, and they are also periorated to receive they ends oi the respective pins 3l and 32. By moving the cam-levers 39 into the position shown in Fig. l, t-he cani will partially Withdraw the eye-bolts from the rings 2O and 21, thereby drawing the rings together and clamping the l.wooden plates 22 tightly against the rim oi" the Wheel 16. The grooves 30 in the plates 2S and 29, act as guides for the pins 3l and While permitting of their movement along said grooves.

The cam levers 39 have the free or power ends of their arms directed inivardly and radially toward the -aXis of the shaft ll, and are connected at said power ends to the radially-extending lugs 40, formed integral on the clutch-sleeve 4l, by their connecting links 42.

The clutch sleeve 41 is mounted on the shaft 1l in a manner to permit it to turn and also to slide longitudinally thereof, and the sleeve has an annular groove to receive a split collar 43. The collar 43 has the trunnions 44 to enter holes in the yoke 45 torming a part oi' a lever 46; One end ot this lever is used as a handle, and the other end is fulcrumed at a ived point 47, whereby, by moving thelever, the Clutch-sleeve 4l will be correspondingly moved longitudinally oi the shaft 1l, and the cam levers 3Q will be moved inwardly or outwardly oi' the pulley A; to cause the 'friction plates to be moved either into or out .ot engagement.

The cams 3S are all alike in `forni, and are integral with the earns and the said rains are each constructed to Contact with the e;\' terior side ol the` friction ring 2l, simultaneously to draw said Itri@tion-.rings 30 and 21 toward each other to clamp the friction-rim 1S, ot the Wheel 16, and eause the belt puli leyel to be rotated along Witu the irietion g Wheel 16.

By removing the arms 5, the l'1'ieti m`1i1igs lll and 2l and 'friction wheel 16, may be in, troduced into the pulley without splittingl them, which insures greater strength .and will keep the parts from displacement and spreading by centrifugal action,

The operation of my device is so simple that further description is unnecessary.

Having thus fully described 4my invention, what l claim as new and Wish to secure by Letters Patent of the .United States is thisl. ln. a clutch-pulley, a loosely mounted belt pulley having one integral and one revmovable set oi radial arms spaced apart from each other, a 'fixed friction wheel mounted inside the belt pulley between the two sets ot arms, clutch means for clamping the belt pulley to the friction Wheel, and means for connecting the removable set of arms to the belt pulley comprising'ilanges on the inside of the rim of the belt pulley extending transversely iroin the junctions of the integral arms, said flanges having longif tudinal grooves and terminating with abrupt ends to torni bearingshoulders for the ends of the removable arms and bolts passing through the corresponding arms orn both sets and throughy the longitudinal groove in the flange between the tivo arms being bolted.

2, The combination with a sha-it, oi a belt pulley loosely mounted thereon, said pulley having tivo set-s oi parallel arms spaced apart 'from each other, one being removably .secured to the pulley, a friction wheel mounted in a i'tved manner on said shaft between the tivo sets of,A arms of the loosely mounted belt pulley, a pair of clamping rings one on each side of the Afriction Wheel, said rings carried by the belt pulley, friction plates carried by the clamping rings, a pair of eye-bolts passing,l through the clampingy rings at diametrically opposite points of said rings, plate extensions from one ot' the rings in pairs inelosing the eye ot' each eye-lmlt, inlerum pinsrairied by the eyes ol said eyebolts grooves in said plates parallel `with the eye-bolts in "which the ends of the l'uleruin pins are seated, levers having bilnreated vani shaped ends embracing said eye-bolts and r fuleruined on said tuk-ruin pins, and means for n'ioying the cani levers toward and l'roni the belt pulley to move the rlaniping'rings toward or l'roni the friction wheel.

.ln witness whereof, l have hereunto set my hand and seal at liuliamipolis, indiana, this liltli day ot December, A. l). one thousand nine hundred and six.

ivi t nessus:

J. A. Nix'rinx. li". ll'. vorlnxicia 

